26650 lithium battery cell for flashlights electronics 3400mah
What are 26650 battery?
26650 is a high performance,high capacity battery designed to provide excellent power for high-drain devices. also known as 1/3 AAA battery,which is able to generate high voltages while also being safe and
efficient, for high-powered LED flashlights.
Lithium battery is the trend to replace the lead acid battery.
| Battery type | LifePO4 battery | Lead acid battery |
| Nominal voltage | 3.2V | 2V |
| Energy density | 180Wh/kg | 30WH/KG |
| Weight | Light | heavy |
| CBM | Small | big |
| Safty rate | High | low |
| Cycles | 3500 | 500 |
| Memory | NO | YES |
| Environmental protection | Environmental protection and pollution-free | pollution |
More and more people choose Lithium battery to replace the lead
acid battery.Lithium is deeper cycle as to 2000 times,much longer
than lead acid.You don't need to change the battery as frequently
as lead acid battery,which can save your cost in battery.
26650 3.2V 3400mah high capacity lithium battery specification
| Items | Specification | Remarks |
Nominal Capacity |
3400mAh | 0.2 C5A Discharge |
| Nominal Voltage | 3.2V | |
Discharge Cut-off Voltage |
2.0V | 0.2 C5A Discharge |
| Charge Limited Voltage | 3.65±0.03V | 0℃～60℃ |
| Standard Charge Current | 0.2 C5A | 0℃～60℃ |
| Standard Discharge Current | 0.2 C5A | -10℃~ +60℃ |
| Rapid Charge Current | 0.5C5A | 0℃～60℃ |
| Rapid Discharge Current | 0.5C5A | -10℃~ +60℃ |
Max. Discharge Current |
3C5A | Limited Voltage2.0V |
| Max. Pulse Discharge Current |
5C5A |
ms |
| Internal Impedance | ≤25mΩ | At AC 1kHz |
| Weight | 大约 About 86.0g | ±2g |
Storage Temperature Range | ≤one month | -20℃ ~ 45℃ |
Voltage of shipment 3.2V～3.4V |
| ≤three months | -20℃ ~ 35℃ |
| ≤a year | -20℃ ~ 25℃ |
Quality Testing
Deligreen's 26650 has lab passed with spec,pls contact us for the
esting report.
| Items | Test Conditions | Specification |
Standard Charge | The "Standard Charge" means charging with constant current 0.2C 5
to3.65V, then charging with constant voltage 3.65V to 0.01C 5 under
28±3 , ℃ charging time will not more than 8h.) (Use Lithium-ion
battery charger, which with an accuracy ±0.05V. | |
Nominal Capacity | The capacity means the discharge capacity of the cell, which is
measured with discharge current 0.2C 5 to cut-off voltage at 2.0V
at 28±3℃ rest for 30minutes after the Standard Charge. |
Nominal Capacity ≥3400mAh |
Cycle Life | After 2000 cycles of charge and discharge, the discharge capacity
is measured with 0.2 C5A discharge current and 2.0V cut-off voltage. |
≥80%Nominal Capacity |
(Storage Characteristic) | Test the cell initial capacity using 0.2C 5 current at 23±2℃ and
record,then charge the cells with 45% capacity, then storage for 3,
6, 12 months respectively at 28±3℃and relative humidity of 45%~75%,
then the cell is cycled for 5 times with charge with 0.2C 5and
discharge with 0.2C 5 at 28±3℃, The maximum discharge capacity (longest discharge time) is recorded.) |
0.2Cdischarge time: After 3 months storage ≥4.5hrs; After 6 months
storage ≥4.25hrs; After 12 months storage ≥4.0hrs) |
| | |
| | |
| | C2/C1≥85% |
| The cell is charged and discharged using 0.2C 5 at 28±3℃. The
discharge | (Capacity Retention |
| capacity is C1. The cell is stored for 28 days in 28 ±3℃ after
fully charged and | C2/C1≥85%) |
| then is discharged using 0.2C 5 at 28±3℃. The capacity is defined
as C2. | |
|
After the test as C 2 , The cell is charged and discharged using
0.2C 5 at 28± 3℃, The discharge capacity is C3. | Capacity recoverable ratio C3/C1≥90% |
Rate Capacity | The discharge capacity is measured with 0.2 C5A discharge current
and 2.0V cut-off voltage after full charged. | ≥100%Nominal Capacity |
| The discharge capacity is measured with 0.5 C5A discharge current
and 2.0V cut-off voltage after full charged. | 0.5C/0.2C=96% |
| The discharge capacity is measured with 1 C5A discharge current and
2.0V cut-off voltage after full charged. | 1C/0.2C=93% |
| The discharge capacity is measured with 3 C5A discharge current and
2.0V cut-off voltage after full charged. | 3C/0.2C=85% |
| Items | Test Conditions | Specification |
Temperature Performance |
Cells shall be charged according to 5.1 and discharged at 0.2C 5 to
2.0 V. Cells shall be stored for 4 hours at the test temperature
prior to discharging and then shall be discharged at the test
temperature, The percentage shall be calculated using discharging
capacity compared to the minimum capacity. | No leakage, No Appearance defect |
| | -20℃/25℃≥40% |
| | -10℃/25℃≥60% |
| | 0℃/25℃≥85% |
| | 25℃/25℃≥100% |
| | 60℃/25℃≥95% |
Constant Temperature and Humidity | Under the temperature of 23±2℃, after charging the cell with 0.2C 5
,then put the cell into the constant temperature and humidity oven
with 40±2℃and 90～ 95% for 48h,then store the cells at RT for 2hrs,
and discharge the cellswith0.2C 5 to 2.0 volts. | The cell should be no deformation, no rust, no leakage, no fire, no
smoking and no explosion. Discharge time ≥3h |
Free Fall Test | (The fully charged cell is dropped three times from a height of
1000 mm (the lowest point of the cell) onto a concrete floor. The
cells or batteries are dropped so as to obtain impacts in random
orientations. After the test, the cell shall be put on rest for a
minimum of one hour and then a visual inspection shall be performed.) | No explosion, No fire, No smoke. The OCV after the test no less than 90% before free-fall
test. |
Environment Characteristics.
| Items | Test Conditions | Specification |
Temperature Performance | Cells shall be charged according to 5.1 and discharged at 0.2C 5 to
2.0 V. Cells shall be stored for 4 hours at the test temperature
prior to discharging and then shall be discharged at the test
temperature, The percentage shall be calculated using discharging
capacity compared to the minimum capacity. | No leakage, No Appearance defect |
| | -20℃/25℃≥40% |
| | -10℃/25℃≥60% |
| | 0℃/25℃≥85% |
| | 25℃/25℃≥100% |
| | 60℃/25℃≥96% |
Constant Temperature and Humidity | Under the temperature of 28±3℃, after charging the cell with 0.2C 5
,then put the cell into the constant temperature and humidity oven
with 40±2℃and 90～ 95% for 48h,then store the cells at RT for 2hrs,
and discharge the cellswith0.2C 5 to 2.0 volts. | The cell should be no deformation, no rust, no leakage, no fire, no
smoking and no explosion. Discharge time ≥3h |
Free Fall Test | The fully charged cell is dropped three times from a height of 1000
mm (the lowest point of the cell) onto a concrete floor. The cells
or batteries are dropped so as to obtain impacts in random
orientations. After the test, the cell shall be put on rest for a
minimum of one hour and then a visual inspection shall be performed. | No explosion, No fire, No smoke. The OCV after the test no less than 90% before free-fall
test. |
26650 battery performs very well in high temperature,If you want to
use a battery in a high temperature,LFP battery is a good option.
-20-60°C,wide range
Application
26650 is one of battery cells for your battery pack,which can be
used for many applications.The pack is IP55,whatever indoor or
outdoor.
Pls let us know your requirement on the battery pack,let's
customize your battery system.
Discharge curve
About the Transportation&Delivery
1. Shippment to USA:By sea+Express(DDP,Tax free)
ETD:5-8 days
ETA:25-35 days after sailing(This is the delivery time for most
orders. Please wait patiently or contact us online)
The tracking will be updated after pick up by local express.Usually
it will take around 15-25 days after sailing.
2. Shipment to EU:By railway+Express(DDP,Tax free).Except
Switzerland,Romania
ETD:5-8 days
ETA:30-45 working days after shipping(This is the delivery time for
most orders. Please wait patiently or contact us online)
The tracking will be updated after pick up by local express.Usually
it will take around 25-40 working days after shipping.
3. We can't deliver the following address directly:
USA: Military address and PO box address are not acceptable;
Puerto Rico, Virgin Islands, Guam, Alaska Note: Hawaii does not
include customs duties and requires additional freight, Please
contact us online.
Portugal: Azores and Madeira
Spain:Canary Islands, hueda and melilia
Russia: Kamchatka Peninsula
Other:Some remote areas not listed,Please provide shipping address
and zip code to to us to check.
About US
Changsha Deligreen Power Co.LTD,founded in 2010,is a "Green Energy
Solution Service Provider".
Newest technology,new idea,heard-working and honest people.
Focus on lithium rechargeable battery,BMS,Balancer,charger and
relative products.
Main application:electric bicycle,scooter,motorhome,AGV,solar/wind
system,Energy storage system,truck and so on.s:
We promise"real"lithium capacity
We promise“100%“ refund for any quality problem
We promise”100%“ replacement for any shipping damage
We promise lifetime fast technical supportCustomers‘ satisfaction
is our endless pursuing.
If you have anything dissatisfied.Please email the
manager:info@deligreenpower.com
FAQ
Q1: What is your MOQ?
A1: Generally speaking, our MOQ is 100 pieces, which varies with
different products.
Q2: Are these batteries brand new?
A2: Yes, all of these batteries we provide are brand new
Q3:What are 26650 batteries used for?
A3:Laptops,flashlights,electronics,vaping
Q4:: I am a distributor. Can I cooperate with the battery warehouse
for a long time?
A4: Yes, Individual pricing for large scale projects and wholesale
demand is available
Q5:where to buy 26650 battery?
A5:pls click the bottom of the page,send your message to us,we will
reply you soonly.
Q6:How long to charge a 26650 battery?
A6:It takes 3-6 hours to charge on a 1A charger.
